Optical measurement and visualization in high-pressure, high-temperature, aviation gas turbine combustors

Planar laser-induced fluorescence (PLIF), planar Mie scattering (PMie), and linear (I-D) spontaneous Raman scattering are applied to flame tube and sector combustors that burn Jet-A fuel at a range of inlet temperatures and pressures that simulate conditions expected in future high-performance civilian gas turbine engines. Chemiluminescence arising from C-2 in the flame was also imaged. Flame spectral emissions measurements were obtained using a scanning spectrometer. Several different advanced concept fuel injectors were examined. First-ever PLIF and chemiluminescence data are presented from the 60-atm gas turbine combustor facility.